Envelope type reactor thermal-transferring method in methanol synthesizing process

Abstract

A shell-and-tube reactor heat transfer method for a methanol synthesis technology adopts a shell-and-tube methanol synthesis reactor and comprises the following steps: (1), a majority of the heat released through the reaction of the methanol synthesis tower is transferred to the boiling water in the shell side; by adding a set of water supply circulation system into the system of the original methanol synthesis circulated based on the water density difference, the methanol synthesis reaction heat is removed from the system and the water-containing part is vaporized to take away the heat generated in the reaction; (2), the water inside a steam drum (3) in the water supply circulation system enters a circulating pump through a vertical pipe and an input valve (7); the circulating pump is pressurized and enters the shell side of the methanol synthesis tower (2) through an output valve (8) so as to greatly increase the water amount of the shell side of the synthesis tower; when the water inside the shell side of the synthesis tower is heated and vaporized into small bubbles; the small bubbles can directly enter into the steam drum (3) through a rising pipe so as to take away more heat to meet high-load requirements.

Description

technical field [0001] The invention belongs to the technical field of methanol synthesis, and in particular relates to a heat transfer method for a shell-and-tube reactor in a methanol synthesis process. Background technique [0002] At present, in methanol production plants, most of them use shell-and-tube methanol synthesis reactors. The methanol synthesis reaction uses gas containing carbon monoxide, carbon dioxide and hydrogen as raw materials, which enters the shell side of the intermediate heat exchanger (1) after being compressed, and enters the tube side of the methanol synthesis tower (2) after being heated to the reaction temperature. Next, the synthetic reaction gas is used for the methanol synthesis reaction. Most of the heat released by the reaction is transferred to the boiling water on the shell side, and the heat generated by the reaction is taken away by the partial vaporization of the water. Part of the temperature of the synthesis reaction gas rises, an...

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Problems solved by technology

[0003] In order to overcome the defect in the above-mentioned prior art that the amount of water entering the shell side of the methanol synthesis tower is small and the heat of reaction released during overloading cannot be removed from the methanol synthesis tower in a timely manner, the present invention provides a shell-and-tube reaction for the methanol synthesis process The heat removal method of the device, using the "shell-and-tube type methanol synthesis tower shell side hydrodynamic circulation device" previously applied by the applicant to achieve faster and more timely removal of more water by increasing the amount of water entering the methanol synthesis tower shell side Reaction heat, make full use of the efficiency of methanol synthesis reaction tower, save energy, reduce cost, increase output value and output

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